Portable barbecue



FIG. 1 is a top front perspective view of a portable barbecue showing mynew design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof.

The ornamental design for a portable barbecue, as shown and described.